--- /dev/null
+++ Libc/Libc-1158.1.2/string/FreeBSD/strxfrm.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
+ *		at Electronni Visti IA, Kiev, Ukraine.
+ *			All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/string/strxfrm.c,v 1.17 2008/10/19 09:10:44 delphij Exp $");
+
+#include "xlocale_private.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <errno.h>
+#include "collate.h"
+
+/*
+ * In the non-POSIX case, we transform each character into a string of
+ * characters representing the character's priority.  Since char is usually
+ * signed, we are limited by 7 bits per byte.  To avoid zero, we need to add
+ * XFRM_OFFSET, so we can't use a full 7 bits.  For simplicity, we choose 6
+ * bits per byte.  We choose 4 bytes per character as a good compromise
+ * between maximum coverage and minimum size.  This gives 24 bits, or 16M
+ * priorities.  So we choose COLLATE_MAX_PRIORITY to be (2^24 - 1).  This
+ * this can be increased if more is needed.
+ */
+
+#define	XFRM_BYTES	4
+#define	XFRM_OFFSET	('0')	/* make all printable characters */
+#define	XFRM_SHIFT	6
+#define	XFRM_MASK	((1 << XFRM_SHIFT) - 1)
+
+static void
+xfrm(unsigned char *p, int pri)
+{
+
+	p[3] = (pri & XFRM_MASK) + XFRM_OFFSET;
+	pri >>= XFRM_SHIFT;
+	p[2] = (pri & XFRM_MASK) + XFRM_OFFSET;
+	pri >>= XFRM_SHIFT;
+	p[1] = (pri & XFRM_MASK) + XFRM_OFFSET;
+	pri >>= XFRM_SHIFT;
+	p[0] = (pri & XFRM_MASK) + XFRM_OFFSET;
+}
+
+size_t
+strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len,
+    locale_t loc)
+{
+	size_t slen;
+	wchar_t *wcs, *xf[2];
+	int sverrno;
+
+	if (!*src && dest) {
+		if (len > 0)
+			*dest = '\0';
+		return 0;
+	}
+
+	NORMALIZE_LOCALE(loc);
+	if (loc->__collate_load_error || (wcs = __collate_mbstowcs(src, loc)) == NULL)
+		return strlcpy(dest, src, len);
+
+	__collate_xfrm(wcs, xf, loc);
+
+	slen = wcslen(xf[0]) * XFRM_BYTES;
+	if (xf[1])
+		slen += (wcslen(xf[1]) + 1) * XFRM_BYTES;
+	if (len > 0) {
+		wchar_t *w = xf[0];
+		int b = 0;
+		unsigned char buf[XFRM_BYTES];
+		unsigned char *bp;
+		while (len > 1) {
+			if (!b) {
+				if (!*w)
+					break;
+				xfrm(bp = buf, *w++);
+				b = XFRM_BYTES;
+			}
+			*dest++ = *(char *)bp++;
+			b--;
+			len--;
+		}
+		if ((w = xf[1]) != NULL) {
+			xfrm(bp = buf, 0);
+			b = XFRM_BYTES;
+			while (len > 1) {
+				if (!b)
+					break;
+				*dest++ = *(char *)bp++;
+				b--;
+				len--;
+			}
+			b = 0;
+			while (len > 1) {
+				if (!b) {
+					if (!*w)
+						break;
+					xfrm(bp = buf, *w++);
+					b = XFRM_BYTES;
+				}
+				*dest++ = *(char *)bp++;
+				b--;
+				len--;
+			}
+		}
+		*dest = 0;
+ 	}
+	sverrno = errno;
+	free(wcs);
+	free(xf[0]);
+	free(xf[1]);
+	errno = sverrno;
+
+	return slen;
+}
+
+size_t
+strxfrm(char * __restrict dest, const char * __restrict src, size_t len)
+{
+	return strxfrm_l(dest, src, len, __current_locale());
+}